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Les,
A good resemblence of the draw down on your lake would be Highland
Lake during last year. The lake is drawn down every year but
especially low last year for Dam repair. I've have fished Highland
this year and have noticed no difference, I don't think there was
a fish kill.
I would guess however that the effect of draw down on a lake would
be dependent upon the type of lake. I do know that a main reason
for oxygen depletion is due to dying weeds which replaces oxygen
with carbon minoxide. You may want to call the Fish & Game to ask
about the potential on your lake.
I know that on Highland lake (N.H.) they restricted Ice Fishing
due to the extreme low water which left only concentrated areas
for fish. You may want to ask if this is also being considered
for your lake.
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| One of my favorite spots to fish suffered a complete killing
off of one species of fish, which most blame on the lowering of
the lake water level. The species that suffered was the Northern
Pike.
There is one guy (a former DEC engineer) who fished that lake
regularly, and he keeps track of everything (what he catches, where
he catches it, time of day, weather, ect...). Apparently he passes
the info on to the wildlife biologists. About 5 years ago, he caught
250+ Northern Pike in that lake. The next year he caught a grand total
of 5!!!
Although I'm not 100% sure of the details, here is what I heard that
happened. One the south end of the lake there is a swampy area that
extends several miles from the lake. This is where the Northern would
go to spawn. This lake was (still is) suffering from tremendous weed
growth in several areas, so the decision was made to lower the lake
level in an effort to kill off some of the weeds. When the lake was
lowered, the water became too shallow for the Northerns to reach the
swamp for the spawn. So, they headed North. At the north end of the
lake there is an outlet (into a stream) that is normally covered with
a grate/screen to keep the fish in. Apparently someone removed this
grate/screen, and when the Northern went north to spawn, they went
right over the dam, never to return.
Like I said, I don't know all this for a fact, but it is what the
popular local opinion is. How else would you explain the dramatic de-
crease in the population of that one species. However, since the
northern are gone, other species have started to flourish. Bass fishing
was great this spring, and is starting to get hot right now.
One thing that I did notice this summer was an unusually large amount
of dead Northern in the lake. We did catch some early in the spring,
but none during the summer. Most of the dead ones I saw were one the
bottom of the lake (less than 10 feet of water) or washed up on shore.
I really don't know what is causing this, but it sure has me wondering
what is killing these fish. I very seldom see a dead bass.
-Ron-
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| My wife is on the Conservation Commission in Winchendon. Any lake
that is to be lowered must have permission from the state via the
local conservation commission. Even private man made lakes fall under
this law. I live on Sunset Lake, and every year they have lowered
the lake four feet for weed control. Well as of Jan 1990 they will
have to apply for a permit. Draining lakes for weed control is not
legal, but for dam repairs it is. That's why you'll see towns and
associations lowering for Dam repairs, even if its to just to
replace the splash boards. Also, water front property owners will
have to apply for a permit to do beach work. The cost of the permit
is about $200.00. Don't blame the towns they get to keep $25.00 Dukakis
gets the rest. Those living on lakes may get together and apply for
a generic permit which all those listed on the permit may do beach
repair.
I kind of thought this was kind of overkill, but after hearing
about people filling beach's with sand from DPW dumps, and
sand from the ocean beaches, it makes sense. Last year we had
a woman dredging her beach during July. The entire lake was full
a silt, which kills fish and effects other wildlife as well. The
people living next door couldn't swim half the summer.
Jim
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